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DragonFly kernel List (threaded) for 2003-12
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Re: libcaps thread testing code committed

From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Mon, 8 Dec 2003 10:23:30 -0800 (PST)

:Craig Dooley <cd5697@xxxxxxxxxx> wrote:
:> I dont think this will work. Anything before the pIII did not have SSE,
:> so PPro, PII, old Xeons are now useless?  Also, even the pIII only had
:> SSE, not SSE2, so there is no way to do double precision floating point
:> with just SSE.  Any Athlon before they went to XP I believe does not
:> have SSE, and I think there might also be no SSE2 in AMD Chips except
:> Athlon64 and maybe Barton.  I dont think this many CPU families can be
:> dropped.  They will have to be supported though.
:Worse, K8 is the first AMD processor that has SSE2, similarily several
:of the minority x86 processors don't have it. So this is basicly a bad
:	Sander
:+++ Out of cheese error +++

    This is why the LWKT code has a modular context save/restore.  We can
    pick and choose exactly what needs to be saved and restored on a 
    thread-by-thread basis.

					Matthew Dillon 

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